<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	private $uid;
	
	public function __construct($username,$password,$uid)
	{
		$this->username=$username;
		$this->password=$password;
		$this->uid = $uid;
	}
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
		if($this->uid == -1)
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		else if($this->uid == -2)
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		else{
			$this->setState('id',$this->uid);
			$this->setState('username',$this->username);
			$this->errorCode=self::ERROR_NONE;
			}

		return !$this->errorCode;
	}

		public function getId(){
			return $this->uid;
		}
		
		public function getName(){
			return $this->username;
		}

}
